http://blogs.technet.com/b/edgeaccessblog/archive/2012/11/26/uag-2010-service-pack-3-is-in-the-works.aspx
The Forefront Unified Access Gateway (UAG) Product Team is excited to let you know that we are currently developing Service Pack 3 for UAG 2010, and we expect to make it available during the first quarter of calendar year 2013 (Q1 CY2013).
Service Pack 3 will provide support for: